Originally Posted by hellosailor
The Steripens are good, but the ones that take AA cells are real finicky about the kind of power they take. NiCad/NiMh can't always give them the voltage they need, and IIRC only Li penlights are recommended for them. Which leaves the CR123 models (I've always thought that was an oddball and expensive battery) or the ones with their own rechargeables sold as a set. Kinda defies logic, but they're apparently very sensitive to battery
issues that verge on magic.
I just bought the AA battery Steripen for a trip to China
. The problems with the unit seem to be using Alkaline batteries or batteries that do not have enough power as well as the metal sensor being wet before putting the unit in water. Yeah, you read that right. Sounds odd but I think it makes sense after thinking about it for a while.
The manual and stickers on the unit I received is pretty clear that 2300/2500 NiMH or LI AA batteries are needed. I skipped the unit which uses CR123 batteries since they are harder to find in the states and I sure don't know about overseas. Having said that, a set of LI batteries is supposed to purify 100 liters of H2O, which is more than enough.
Having the option of using rechargable NIMH batteries is nice.
We will only drink boiled or bottled water in China
but I figured for $50, the Steripen was cheap insurance
. Still have two types of bad stomach meds to take as well.